What's That Bug? does not endorse extermination

black-orange bug?
Hello: your web site is really cool. My son and I found a bug outside and we don’t know what it is. We live in Phoenix, Arizona. The bug is pretty big. Maybe 1 inch long. Black body with an orange head. We found it on a leaf on our Magnolia tree. Just like to know anything about it. Is it harmless? I haven’t seen one of these bugs after living in Arizona for 10 years. So I am curious as to what it is and if it is common around here.
thanks!
Paul Avona

Hi Paul,
You have a photo of an Arizona Blister Beetle, Lytta magister. It is found in deserts in Arizona. Much of the life cycle is still unknown, but adults eat plant tissues of desert shrubs and larvae attacks grasshopper eggs in soil. Blister Beetles secrete a chemical cantharidin which causes blisters on human skin.

What's That Bug? does not endorse extermination
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